<!DOCTYPE html>
<html>
    <head lang="en">
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width,initial-scale=1">
        <link rel="stylesheet" href="style01.css" type="text/css"> 

    </head>
    <body>
        <div class="heading"></div>
        <div class="container">
                <div class="left"></div>
                <div class="main"></div>
                <div class="right"></div>
        </div>
        <div class="footing"></div>
    </body>
</html>